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For the Inventor, By the Inventor

Kanagawa, Japan

Masaharu Kawamura

This inventor holds 93 USPTO granted patents, primarily in Data Storage Devices (CPC class 354289). Top assignees: Canon Kabushiki Kaisha, Hitachi Global Storage Technologies Netherlands B.v., International Business Machines Corporation. Active years: 1977-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaharu Kawamura. Retrieved from https://idiyas.com/inventor/masaharu-kawamura

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank
USPTO Granted Patents = 93

% Patents Active = 94.6

Average Co-Inventor Count = 3.2

ph-index = 16

Forward Citations = 838(Granted Patents)

Forward Citations (Not Self Cited) = 802(Dec 10, 2025)


Inventors with similar research interests:

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Location History:

  • Hino, JA (1977 - 1978)
  • Hino, JP (1978 - 1983)
  • Tokyo, JP (1984 - 1987)
  • Kawasaki, JP (1979 - 1989)
  • Zama, JP (1998)
  • Kanagawa-ken, JP (1998)
  • Kanagawa, JP (1984 - 2013)

Company Filing History:

goldMedal85 out of 93,136 
 
Canon Kabushiki Kaisha
 patents
silverMedal4 out of 2,636 
 
Hitachi Global Storage Technologies Netherlands B.v.
 patents
bronzeMedal2 out of 166,425 
 
International Business Machines Corporation
 patents
4. 1 out of 987 
 
Hgst Netherlands, B.v.
 patents
5. 1 out of 1 
 
Kanon Kabushiki Kaisha
 patent

Years Active: 1977-2013

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Areas of Expertise:
Shingled Magnetic Recording
Data Storage Device
Heater Control
Camera Technology
Servo Compensation
Film Drive Device
Automatic Film Loading
Analog-to-Digital Converter
Photometric Apparatus
Motorized Drive Device
Auto-Bracket Device
Aperture Decision System
93 patents (USPTO):Explore Patents
1. 8559121 - System, method and apparatus for shingled magnetic recording in disk drives (2013-10-15),
2. 7719785 - Disk drive device, manufacturing method thereof, and method for setting heater power value for a heater for adjusting a clearance (2010-05-18),
3. 7525752 - Media drive and control method for the same (2009-04-28),
4. 7385777 - Data storage device with heater, and control method therefor with timing control (2008-06-10),
5. 7369349 - Data storage device with heater, and control method therefor involving different control modes (2008-05-06),
6. 5815332 - Recording medium having improved servo compensation and method for same (1998-09-29),
7. 5784105 - Video camera with built-in secondary battery (1998-07-21),
8. 5329328 - Camera (1994-07-12),
9. 5274407 - Camera (1993-12-28),
10. 5070349 - Camera (1991-12-03),
11. 4926204 - Photometric apparatus for a camera (1990-05-15),
12. 4918474 - Camera (1990-04-17),
13. 4910543 - Camera (1990-03-20),
14. 4902994 - Deflecting device for a cathode ray tube (1990-02-20),
15. 4868598 - Camera (1989-09-19),

Title: Exploring the Innovations of Masaharu Kawamura

Introduction:

Masaharu Kawamura, a prolific inventor based in Kanagawa, Japan, has made significant contributions to the field of technology with an impressive portfolio of 93 patents. His groundbreaking work in shingled magnetic recording in disk drives and the precision adjustment of clearances in disk drive devices has revolutionized the industry.

Latest Patents:

1. "System, method and apparatus for shingled magnetic recording in disk drives": Kawamura's innovative method allows for targeted corruption of user data in shingled magnetic recording disks, enhancing data security measures.

2. "Disk drive device, manufacturing method thereof, and method for setting heater power value for a heater for adjusting a clearance": This patent showcases Kawamura's expertise in achieving accurate and reliable clearance control in disk drive devices, ensuring optimal performance.

Career Highlights:

Throughout his career, Masaharu Kawamura has worked with esteemed companies such as Canon Kabushiki Kaisha and Hitachi Global Storage Technologies Netherlands B.V. His expertise and dedication have significantly influenced the technological advancements in these organizations, setting new standards in the industry.

Collaborations:

Kawamura has collaborated closely with industry peers such as Ryuichi Kobayashi and Yoshihito Harada, leveraging their collective expertise to push the boundaries of innovation further. Their combined efforts have led to the development of cutting-edge technologies that have redefined the landscape of the tech industry.

Conclusion:

Masaharu Kawamura's relentless pursuit of innovation and dedication to technological advancement have solidified his reputation as a pioneering inventor in the field. His patents and contributions continue to inspire future generations of inventors, leaving a lasting impact on the world of technology.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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